Delta RMC101 - Manual (Page 871)

Appendix D: Status Field Reference
D-9
This bit only applies to position axes. Therefore, analog velocity, pressure, and force axes never
set this bit. Notice that for quadrature feedback axes, this error bit is redefined as described
below.
This error bit is cleared when any of the commands listed above is issued, and the underlying
error condition is no longer present.
The RMC can be configured to automatically stop on the rising edge of this bit by using the Auto
Stop parameter.
Bit 14 (QUAD or STEP) - Extend/Clockwise Limit Switch
This bit is set when the axis is moving in the extend or clockwise direction and the
Extend/Clockwise Limit Switch is activated.
Notice that this bit is not latched. That is, it is automatically cleared when the limit switch goes
inactive, or the axis changes direction.
The Limit Switch bit in the Config parameter determines the active state of the limit switch. If the
limit switch is not used, either hardwire it to the inactive state or use the Limit Switch bit to make
the limit switch always inactive.
The RMC can be configured to automatically stop on the rising edge of this bit by using the Auto
Stop parameter.
Bit 13 (MDT, SSI, Analog, Resolver) - Transducer Overflow
This error bit is set when the RMC detects that the position on the transducer is outside
acceptable limits. The limits are defined as follows for each transducer:
Transducer Overflow Condition
MDT
(Start/Stop) The MDT has not responded with a return pulse within eighteen
bits of counts (262,144 counts), which occurs in just over two
milliseconds. This is a distance of roughly 240 inches (6.1 m).
MDT (PWM) The MDT has not responded with a falling edge within eighteen
bits of counts (262,144 counts), which occurs in just over two
milliseconds. This is a distance of roughly 240 inches (6.1 m)
divided by the number of recirculations configured in the
transducer.
SSI (Linear) The SSI transducer indicated that it did not detect the magnet
location. Balluff transducers indicate this by setting bit 21 of the
count value, which limits the position to 2,097,152 counts. Other
transducers (including Temposonic) indicate this by returning a
count value of zero. Configure which method the RMC uses as
described in SSI Configuration.
SSI (Rotary) Not defined. This error bit will never be set.
Analog The analog reading is above the maximum input allowed by the
RMC. See the Counts topic for a description of what voltages or
currents this range corresponds to. Notice that overflowing in the
negative direction will result in a No Transducer error (bit 15)
instead of a Transducer Overflow error (bit 13).
This error bit is cleared when any of the commands listed above is issued, and the underlying
error condition is no longer present.